S. Khushrushahi, T.A. Hatton, M. Zahn
Massachusetts Institute of Technology, Cambridge, MA, USA
Magnetic separation of magnetic liquid phases/particles from non-magnetic liquid phases/particles are needed for applications such as cleaning up oil spills by separating oil and water liquid phases or separating magnetic materials from non-magnetic materials in biomedical and microfluidic applications. Magnetic fluids (also called ferrofluids), in a magnetic field, experience a magnetic force ...
Validation for a Quick and Reliable Procedure for Centrifugal Pumps Using Frozen Rotor Methodology in COMSOL Multiphysics®
D. Manenti, G. Tanghetti, R. Roveglia
Metelli SPA, Cologne (BS), Italy
Single stage centrifugal pumps are widely used in several engineering fields such as: room conditioning, energetic cycles, automotive industry, home care, etc. Thus, the possibility of simulate their behaviour, in terms of pressure increase and mass flow rate, is helpful in reducing prototyping costs in the first design stages. The Rotating Machinery Interface is a dedicated tool implemented ...
H.A. Akhlaghi Amiri, A.A. Hamouda
University of Stavanger, Stavanger, Rogaland, Norway
This paper addresses one of the major challenges in water-flooded oil reservoirs, which is early water breakthrough due to the presence of high permeable layers in the media. COMSOL Multiphysics is used to model two phase (water and oil) flow in dual-permeability porous medium at micro-scales. The heat transfer module is coupled with the laminar two-phase flow interface, because temperature ...
O. Toscanelli, V. Colla
Scuola Superiore S. Anna, Pisa, Italy
The Large Eddy Simulation is an important method to simulate turbulent flow. It does not produce a closed system of equations, to achieve this it is necessary to model the not-closed terms. The deconvolution can be used for this purpose. In this study some numerical experiments on this topic are performed with COMSOL Multiphysics®. The main objectives are to find an efficient way to implement ...
On the Use of COMSOL Multiphysics to Understand and Optimize the Filling Phase in the Injection and Micro-Injection Molding Process
M. Moguedet1, P. Namy2, and Y. Béreaux3
1Pôle Européen de Plasturgie, Bellignat, France
2SIMTEC, Grenoble, France
3LAMCOS, Site de Plasturgie, INSA Lyon, Bellignat, France
The work presented here deals with the simulation of the cavity filling stage of the injection and micro-injection molding process for thermoplastic materials.COMSOL Multiphysics gives us the means to take into consideration some other aspects usually neglected in commercial 3D softwares dedicated to polymer processing. In particular, tracking of the flow front is based on a Level Set approach. ...
Numerical Calculation of Effective Density and Compressibility Tensors in Periodic Porous Media: A Multi-Scale Asymptotic Method
C. Lee, M. Leamy, and J. Nadler
School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
Georgia Tech Research Institute (GTRI), Georgia Institute of Technology
A major issue in predicting and controlling (via design) absorption properties of rigid porous media is the determination of the frequency-dependent effective density and compressibility tensors. Unlike previous research efforts which employ in-house and, oftentimes, multiple numerical procedures for determining these two essential tensors, we formulate their solution in terms of a set of ...
A.H. Ito, O.T. Kaminata , S.R. Lautenschlager
State University of Maringá, Maringá, Paraná, Brazil
The hydraulic flocculates are employed in water treatment plants (WTPs), but may present problems during the mixing stage reducing the efficiency of treatment. In this context modeling of a hydraulic flocculate using COMSOL and a 1:10 scale model of the Maringá-PR Brazil city WTP flocculate was done. The WTP flocculate is shown in figure 1 and the model illustrating the acrylic flocculate ...
P. Apell, S. Hjalmarsson, T. Lindberg, I. Wernström, Y. Tarakonov, A. Erichsen Andersson, M. Karlsteen
Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
Sahlgrenska University Hospital, Department of Anesthesia, Surgery and Intensive Care, Göteborg, Sweden
Patients undergoing surgery are sensitive to infections. The operation staff may spread 10^4 particles per person per minute, of which ten percent are presumed bacteria-carrying. We visualize the influence of the personnel on the air and particle flows for the two most common ventilation systems in Swedish hospitals using Comsol Multiphysics with particle tracing.. The Laminar Air ...
J. Ferdous, M. Ghaly , V. B. Kolachalama , T. Shazly[1,4]
Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA
Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, USA
Charles Stark Draper Laboratory, Cambridge, MA, USA
Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA
Inferior vena cava (IVC) filters have become essential components in deep vein thrombosis treatment to prevent preventing pulmonary embolisms. Filter efficacy relies on maintaining IVC patency by preventing filter-induced thrombosis following clot capture. A computational model has been developed to determine whether a candidate filter design elicits hemodynamic patterns that promote thrombus ...
J. Knox, K. Kittredge, R.F. Coker, R. Cummings, C.F. Gomez
NASA - Marshall Space Flight Center, Huntsville, AL, USA
“NASA\'s Advanced Exploration Systems (AES) program is pioneering new approaches for rapidly developing prototype systems, demonstrating key capabilities, and validating operational concepts for future human missions beyond Earth orbit” . Under the new Atmosphere Revitalization Recovery and Environmental Monitoring (ARREM) project , efforts are focused on improving current ...